chore: commit pending ZXDB explorer changes prior to index perf work

Context
- Housekeeping commit to capture all current ZXDB Explorer work before index-page performance optimizations.

Includes
- Server-rendered entry detail page with ISR and parallelized DB queries.
- Node runtime for ZXDB API routes and params validation updates for Next 15.
- ZXDB repository extensions (facets, label queries, category queries).
- Cross-linking and Link-based prefetch across ZXDB UI.
- Cache headers on low-churn list APIs.

Notes
- Follow-up commit will focus specifically on speeding up index pages via SSR initial data and ISR.

Signed-off-by: Junie@lucy.xalior.com

src/app/zxdb/page.tsx

@@ -1,9 +1,14 @@
 import ZxdbExplorer from "./ZxdbExplorer";
+import { searchEntries } from "@/server/repo/zxdb";
 
 export const metadata = {
   title: "ZXDB Explorer",
 };
 
-export default function Page() {
-  return <ZxdbExplorer />;
+export const revalidate = 3600;
+
+export default async function Page() {
+  // Server-render initial page (no query) to avoid first client fetch
+  const initial = await searchEntries({ page: 1, pageSize: 20, sort: "id_desc" });
+  return <ZxdbExplorer initial={initial as any} />;
 }